Meet Me On The Cheapo Holodeck, Cap'n

Thus, Bove and his team have developed Mark III--expected to be
completed within a couple of months--which is based on the earlier
systems but has three major differences. First, explains Bove, the new
system processes three-dimensional images on a standard graphics
processor rather than on specialized hardware. It turns out, he says,
that the graphics cards that are found in high-end PCs and gaming
consoles are a good fit for the type of image processing required to
create a hologram. Second, his team has redesigned a gadget called an
acousto-optic modulator, commonly found in telecommunications systems,
to direct light from lasers to form the hologram. The new modulator has
a higher bandwidth, which makes for a high-resolution hologram, and is
less expensive than the ones used in Mark II. Third, the researchers
have eliminated some of the clunky optical components that made the
Marks I and II as large as a dining-room table.